| URN |
etd-0624114-152129 |
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| Author |
Yu-Hung Lo |
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| Author's Email Address |
harry6830@pcs.ee.nsysu.edu.tw |
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| Statistics |
This thesis had been viewed 5570 times. Download 1463 times. |
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| Department |
Electrical Engineering |
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| Year |
2013 |
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| Semester |
2 |
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| Degree |
Master |
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| Type of Document |
|
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| Language |
zh-TW.Big5 Chinese |
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| Title |
Design of Dual-Band Bandpass Filter for WLAN Applications |
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| Date of Defense |
2014-07-09 |
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| Page Count |
55 |
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| Keyword |
spur-line
bandpass filter (BPF)
dual-band
stub-loaded resonator (SLR)
|
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| Abstract |
The rapid development for the wireless communication applications is happening in the multiple bands and filters are fundamental components extensively used in microwave and millimeter-wave circuits. Recently, the use of wireless local area network (WLAN) systems has expanded rapidly, demanding more multiband applications.
In this thesis, a microstrip-line dual-band bandpass filter using stub-loaded resonator (SLR) is proposed. The device has good selectivity in first pass band and wide bandwidth in second pass band. By properly adjusting the gap between source-load and SLR, good return loss at lower frequencies can be achieved.
To further improve the rejection level between the first pass band and second pass band, the spur-line is etched in the coupled feeding line to produce another transmission zero at 4.3 GHz.
Based on the proposed SLR, a dual-band bandpass filter with three transmission zeros is implemented. The upper stopband extends to 10.75 GHz to have good suppression below -20dB. |
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| Advisory Committee |
Chih-Wen Kuo - chair
Hsin-Lung Su - co-chair
Pu-Hua Deng - co-chair
Hsing-Feng Chen - co-chair
Ken-Huang Lin - advisor
|
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| Files |
Indicate in-campus at 0 year and off-campus access at 1 year. |
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| Date of Submission |
2014-07-24 |
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